CN110229984B - High-strength Mg-Gd-Er-Y magnesium alloy and preparation method thereof - Google Patents
High-strength Mg-Gd-Er-Y magnesium alloy and preparation method thereof Download PDFInfo
- Publication number
- CN110229984B CN110229984B CN201910538114.4A CN201910538114A CN110229984B CN 110229984 B CN110229984 B CN 110229984B CN 201910538114 A CN201910538114 A CN 201910538114A CN 110229984 B CN110229984 B CN 110229984B
- Authority
- CN
- China
- Prior art keywords
- magnesium
- alloy
- temperature
- strength
- melt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000956 alloy Substances 0.000 claims abstract description 131
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 130
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000011777 magnesium Substances 0.000 claims abstract description 75
- 230000032683 aging Effects 0.000 claims abstract description 60
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 37
- 229910052691 Erbium Inorganic materials 0.000 claims abstract description 32
- 238000003723 Smelting Methods 0.000 claims abstract description 27
- 239000012535 impurity Substances 0.000 claims abstract description 27
- 229910052689 Holmium Inorganic materials 0.000 claims abstract description 26
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 16
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 15
- -1 magnesium-gadolinium Chemical compound 0.000 claims description 61
- 229910052749 magnesium Inorganic materials 0.000 claims description 56
- 239000000155 melt Substances 0.000 claims description 48
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 34
- 230000001681 protective Effects 0.000 claims description 31
- 238000005266 casting Methods 0.000 claims description 24
- 238000007670 refining Methods 0.000 claims description 17
- 238000001125 extrusion Methods 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000010791 quenching Methods 0.000 claims description 10
- 230000000171 quenching Effects 0.000 claims description 10
- 239000006104 solid solution Substances 0.000 claims description 10
- 238000001192 hot extrusion Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000005728 strengthening Methods 0.000 abstract description 12
- 238000001556 precipitation Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000001953 recrystallisation Methods 0.000 abstract description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 26
- 230000000052 comparative effect Effects 0.000 description 25
- 229910052802 copper Inorganic materials 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 11
- 229910052759 nickel Inorganic materials 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000007792 addition Methods 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910003023 Mg-Al Inorganic materials 0.000 description 1
- 229910000946 Y alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making alloys
- C22C1/02—Making alloys by melting
- C22C1/03—Making alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/06—Alloys based on magnesium with a rare earth metal as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
Abstract
The invention provides a high-strength Mg-Gd-Er-Y magnesium alloy and a preparation method thereof, wherein the alloy comprises the following components in percentage by mass: 4-15 wt.% Gd, 0.2-6 wt.% Er, 0.2-6 wt.% Y, 0-4 wt.% Ho, 0-1 wt.% Zr, and Gd + Er + Y + Ho: 6.2-20 wt.%, the balance being Mg and unavoidable impurities. The preparation method of the magnesium alloy comprises three stages of smelting, thermal deformation and aging treatment. According to the invention, through thermal deformation treatment and subsequent aging treatment, partial recrystallization is carried out under the condition of keeping the texture to realize grain refinement, a recrystallization texture and a texture dual-phase structure are formed, and simultaneously, a dispersed strengthening phase is precipitated in the aging process, so that the wrought magnesium alloy has excellent room-temperature and high-temperature mechanical properties through the comprehensive effects of texture strengthening, fine grain strengthening and precipitation strengthening.
Description
Technical Field
The invention belongs to the technical field of metal materials, relates to a high-strength magnesium alloy and a preparation method thereof, and particularly relates to a high-strength Mg-Gd-Er-Y magnesium alloy and a preparation method thereof.
Background
The magnesium alloy is used as the lightest metal structure material at present, has a series of unique advantages of high specific strength and specific rigidity, good damping vibration attenuation, strong electromagnetic shielding and heat conducting performance, easy cutting and processing, easy recovery and the like, and has great application potential in structural part industries such as aerospace, automobiles, computers, communication, consumer electronics and the like. However, the magnesium alloy has low absolute strength, poor plasticity, poor heat resistance and other defects, which severely limit the application of the magnesium alloy in the field of practical engineering.
The Mg-Al series wrought magnesium alloy is the most widely used magnesium alloy system at present, has good casting performance and can be strengthened by heat treatment, but has poor mechanical performance at room temperature, and simultaneously, the main strengthening phase Mg at high temperature17Al12Is easily coarsened, resulting in poor mechanical properties at high temperatures.
Therefore, improvement of strength and heat resistance of magnesium alloys is an important issue in the development of magnesium alloy materials. The technical personnel for optimizing the components and the heat treatment process of the magnesium alloy and developing a high-strength heat-resistant magnesium alloy become the magnesium alloy urgently to solve the problems.
The invention patent application with publication number 107245619A discloses an ultrahigh-strength high-temperature-resistant magnesium alloy, which comprises the following components in percentage by mass: gd: 8.0-9.6%, Y: 1.8-3.2%, and the ratio of Gd content to Y content is: Gd/Y is more than or equal to 3 and less than or equal to 5, and Zr: 0.3-0.7%, Ag: 0.02-0.5%, Er: 0.02-0.3%, the ratio of Ag content to Er content is: Ag/Er is more than or equal to 1 and less than or equal to 3, wherein Fe is less than or equal to 0.02 percent, Si is less than or equal to 0.02 percent, Cu is less than or equal to 0.005 percent, Ni is less than or equal to 0.003 percent, the total content of impurities is less than or equal to 0.1 percent, and the balance is Mg. In the patent, a large-size ingot with the diameter of 300-630mm can be prepared by adding Ag and Er, and a component with the outer diameter of 1700mm is prepared; the tensile strength of the alloy in a T6 state is more than or equal to 470MPa, and the yield strength is more than or equal to 400 MPa; the tensile strength at 200 ℃ is more than or equal to 350MPa, and the yield strength is more than or equal to 260 MPa. However, in this magnesium alloy, the addition of Ag causes a decrease in the solubility of rare earth elements such as Gd and Y in the magnesium alloy, a large amount of eutectic structures remain after homogenization treatment of the alloy, and the thermoplastic workability deteriorates.
Disclosure of Invention
Aiming at the problems of low strength and poor heat resistance of the existing magnesium alloy, the invention aims to provide a high-strength Mg-Gd-Er-Y magnesium alloy and a preparation method thereof. The prepared magnesium alloy is partially recrystallized by controlling the content and proportion of rare earth elements of the magnesium alloy, thermal deformation process parameters and aging treatment parameters, crystal grains are refined while a part of texture is kept, and the mechanical property of the alloy is further improved by the corresponding aging treatment process.
The purpose of the invention is realized by the following technical scheme:
the invention provides a high-strength Mg-Gd-Er-Y magnesium alloy which comprises the following elements in percentage by weight: gd is 4-15 wt.%, Er is 2-6 wt.%, Y is 0.2-6 wt.%, Ho is 0-4 wt.%, Zr is 0-1 wt.%, and the total amount of Gd, Er, Y and Ho is: 6.2-20 wt.%, the balance being Mg and unavoidable impurities.
Preferably, in the magnesium alloy, Ho is 0.5-2 wt.%. The precipitation strengthening effect of the Ho element is not as good as that of Gd, Y and Er elements, but the improvement of the plasticity of the alloy is facilitated, and the excellent comprehensive mechanical property of the alloy is ensured.
Preferably, in the magnesium alloy, Zr is 0.5-1 wt.%. The Zr element mainly plays a role in refining grains in the magnesium alloy, but when the Zr content is too high, the residual Zr core can adversely affect the mechanical properties of the alloy.
The invention also provides a preparation method of the high-strength Mg-Gd-Er-Y magnesium alloy, which comprises the three processes of smelting, thermal deformation treatment and aging treatment in sequence.
Preferably, the smelting comprises the following specific steps:
s1, baking materials: preheating pure magnesium and intermediate alloys of magnesium-gadolinium, magnesium-erbium, magnesium-yttrium, magnesium-holmium and magnesium-zirconium at the temperature of 200-240 ℃;
s2, melting magnesium, adding Gd, Er, Y and Ho: melting the dried pure magnesium in a protective atmosphere; after pure magnesium is completely melted, adding Mg-Gd intermediate alloy, Mg-Er intermediate alloy, Mg-Y intermediate alloy and Mg-Ho intermediate alloy when the temperature of the melt is raised to 730-750 ℃; wherein the addition of Gd, Er, Y and Ho is determined according to the mass percentage of Gd, Er, Y and Ho in the Mg-Gd intermediate alloy, the Mg-Er intermediate alloy, the Mg-Y intermediate alloy and the Mg-Ho intermediate alloy and the smelting yield of Gd, Er, Y and Ho elements respectively;
s3, adding Zr: under a protective atmosphere, adding an Mg-Zr intermediate alloy when the temperature of the melt obtained in the step S2 reaches 750-780 ℃, wherein the adding amount is determined according to the mass percentage of Gd in the Mg-Gd intermediate alloy and the smelting yield of Gd element;
s4, casting: and under a protective atmosphere, stirring when all alloys are completely melted and the temperature of the melt rises to 730-750 ℃, then refining without power failure for 5-10 minutes when the temperature of the melt rises to 750-760 ℃, heating to 780 ℃ after refining, standing for 25-40 minutes, skimming the surface scum after the melt is cooled to 710-740 ℃ after standing, and casting to obtain the alloy ingot.
Preferably, in step S1, the preheating time is 4 hours or more.
Preferably, in step S2, after pure magnesium is completely melted, Mg-Gd intermediate alloy, Mg-Er intermediate alloy, Mg-Y intermediate alloy and Mg-Ho intermediate alloy are added in sequence when the temperature of the melt is raised to 730-750 ℃.
Preferably, the protective atmosphere is SF6And CO2The mixed atmosphere of (3).
Preferably, in step S4, the casting steel mold is preheated to 200 to 240 ℃.
Preferably, the thermal deformation treatment comprises the following specific steps:
a1, carrying out solid solution on the alloy ingot obtained by smelting at 480-540 ℃ for 2-10 hours in advance, and quenching with warm water at 70 ℃;
a2, carrying out hot extrusion on the cast ingot subjected to the solution treatment in the step A1, wherein the extrusion temperature is 200 ℃, and the extrusion ratio is 20: 1.
Preferably, the aging treatment comprises the following specific steps: aging for 2-10 h at 170-250 ℃, and then aging for 10-60 h at 100-170 ℃. The first-stage aging temperature is higher, the time is shorter, a large amount of nucleation of a precipitated phase can be promoted, the second-stage aging temperature is lower, the time is longer, the further growth of the precipitated phase can be promoted, the precipitated phase can be uniformly dispersed in a matrix through the two-stage aging treatment, and the alloy is guaranteed to have good mechanical properties.
According to the invention, through solid solution treatment, thermal deformation treatment and subsequent aging treatment, partial recrystallization is carried out under the condition of keeping the texture to realize grain refinement, a recrystallized structure and a texture dual-phase structure are formed, meanwhile, the alloy strength is further improved through a dispersion strengthening phase precipitated in the aging process, and the magnesium alloy has excellent room-temperature and high-temperature mechanical properties through the comprehensive effects of texture strengthening, fine-grain strengthening and precipitation strengthening.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, other rare earth elements are added on the basis of the traditional Mg-Gd-Y alloy, so that the room temperature strength, plasticity and heat resistance of the alloy are improved.
2. The invention can partially recrystallize the wrought magnesium alloy by carrying out hot extrusion treatment and subsequent aging treatment on the magnesium alloy, so that the alloy has a two-phase structure of texture and recrystallized grains, and has better comprehensive mechanical properties compared with the wrought alloy which is completely recrystallized.
3. The invention also provides a heat treatment method of double-stage aging, which promotes the precipitation of dispersed phases under the condition of ensuring that recrystallized grains are not obviously grown, and further improves the mechanical property of the alloy.
4. In the application, the Ho element is added, the atomic radius of the Ho element is close to that of Gd, Er and Y elements, and the damage to the plasticity of the alloy is small in the aging precipitation process.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The following embodiment provides a high-strength Mg-Gd-Er-Y magnesium alloy and a preparation method thereof, wherein the high-strength Mg-Gd-Er-Y magnesium alloy comprises the following components in percentage by mass: 4-15 wt.% Gd, 0.2-6 wt.% Er, 0.2-6 wt.% Y, 0-4% Ho, Zr content of 0-1 wt.%, Gd + Er + Y + Ho: 6.2-20 wt.%, the balance being Mg and unavoidable impurities. The wt.% refers to the percentage of the component in the total mass of the alloy formulated.
Gd is adopted as a first component, because the solid solubility of the Gd in an Mg solid solution is 3.82 wt% at 200 ℃, the addition amount of the Gd is not lower than 4 wt% for ensuring that the alloy obtains good effects of aging precipitation strengthening and solid solution strength, and meanwhile, the addition amount of the Gd is not higher than 15 wt% for avoiding too much increase of the alloy cost and density and excessive embrittlement of the alloy; er, Y and Ho are used as the second, third and fourth components, so that the solid solubility of Gd in Mg can be reduced, the aging precipitation strengthening effect of Gd is improved, and the appearance of an aging hardness peak value can be advanced. Meanwhile, in order to reduce the cost, the addition amount of the rare earth elements is not excessively high, and Gd + Y + Er + Ho is in a range of 6.2 to 20 wt.%. Zr is adopted as a fourth component to improve the toughness of the alloy and improve the processing property of the alloy.
The preparation method of the high-strength wrought magnesium alloy Mg-Gd-Er-Y is divided into three stages, and comprises the steps of smelting, thermal deformation and subsequent heat treatment in sequence; wherein the content of the first and second substances,
the smelting process is carried out in SF6And CO2The method is carried out under the protection of mixed gas, and comprises the following steps:
(1) drying materials: preheating pure magnesium, magnesium-gadolinium, magnesium-erbium, magnesium-yttrium, magnesium-holmium and magnesium-zirconium intermediate alloy at 200-240 ℃ for 4 hours;
(2) melting magnesium: under the protective atmosphere, adopting a resistance furnace to melt the dried pure magnesium;
(3) adding Gd: under a protective atmosphere, after pure magnesium is completely melted, adding Mg-Gd intermediate alloy when the temperature of the melt is raised to 730-750 ℃, wherein the adding amount is determined according to the mass percentage of Gd in the Mg-Gd intermediate alloy and the smelting yield of Gd element;
(4) adding Er, Y and Ho: under a protective atmosphere, after Mg-Gd is melted, adding a Mg-Er intermediate alloy when the temperature of the melt is raised to 730-750 ℃, wherein the adding amount is determined according to the mass percentage of Er in the Mg-Er intermediate alloy and the smelting yield of Er element; in this way, Mg-Y, Mg-Ho was added;
(5) adding Zr: adding Mg-Zr intermediate alloy when the temperature of the melt reaches 750-780 ℃ under the protective atmosphere, wherein the adding amount is determined according to the mass percentage of Zr in the Mg-Zr intermediate alloy and the smelting yield of Zr element;
(6) casting: and stirring for 5 minutes when all the alloys are completely melted and the temperature of the melt rises to 730-750 ℃, then refining for 5-10 minutes without power failure when the temperature of the melt rises to 750-760 ℃, heating to 780 ℃ after refining, standing for 25-40 minutes, skimming the surface scum and casting into alloy ingots after the melt is cooled to 710-740 ℃, and preheating a steel mould for casting to 200-240 ℃.
The thermal deformation process comprises the following steps:
(1) and (3) carrying out solid solution treatment on the alloy ingot obtained by smelting at 480-540 ℃ for 2-10 hours in advance, and quenching with warm water at 70 ℃.
(2) Carrying out hot extrusion on the cast ingot subjected to the solution treatment, wherein the extrusion temperature is 200 ℃, and the extrusion ratio is 20: 1.
the aging treatment process comprises the following steps:
aging for 2-10 h at 170-250 ℃, and then aging for 10-60 h at 100-170 ℃. And carrying out water quenching treatment after aging.
Example 1
The embodiment provides a high-strength Mg-Gd-Er-Y magnesium alloy which comprises the following components in percentage by mass: 15 wt.% Gd, 3 wt.% Er, 2 wt.% Y, 1 wt.% Zr, the balance Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%.
The preparation method of the Mg-Gd-Er-Y magnesium alloy comprises the following steps:
1. melting
At SF6And CO2The method is carried out under the protection of mixed gas, and comprises the following steps:
(1) drying materials: preheating pure magnesium, magnesium-gadolinium, magnesium-erbium, magnesium-yttrium and magnesium-zirconium intermediate alloy for 4 hours at 200 ℃;
(2) melting magnesium: under the protective atmosphere, adopting a resistance furnace to melt the dried pure magnesium;
(3) adding Gd: under the protective atmosphere, after pure magnesium is completely melted, adding Mg-Gd intermediate alloy when the temperature of the melt is raised to 750 ℃, wherein the adding amount is determined according to the mass percentage of Gd in the Mg-Gd intermediate alloy and the smelting yield of Gd element;
(4) adding Er, Y: under the protective atmosphere, after Mg-Gd is melted, adding Mg-Er intermediate alloy when the temperature of the melt is raised to 750 ℃; adding Mg-Y according to the mode;
(5) adding Zr: adding Mg-Zr intermediate alloy when the temperature of the melt reaches 780 ℃ in protective atmosphere;
(6) casting: stirring for 5 minutes when all alloys are completely melted and the temperature of the melt rises to 750 ℃, then continuously refining for 10 minutes when the temperature of the melt rises to 760 ℃, heating to 780 ℃ after refining, standing for 30 minutes, skimming surface scum and casting into alloy ingots after the melt is cooled to 720 ℃, and preheating a steel mould for casting to 200 ℃.
2. Heat distortion treatment
(1) Pre-dissolving an alloy ingot obtained by smelting at 540 ℃ for 10 hours, and quenching with warm water at 70 ℃;
(2) carrying out hot extrusion on the cast ingot subjected to the solution treatment, wherein the extrusion temperature is 200 ℃, and the extrusion ratio is 20: 1.
3. aging treatment
Carrying out aging treatment on the alloy obtained after thermal deformation, wherein the aging process comprises the following steps: aging at 250 deg.C for 10 hr, and aging at 170 deg.C for 60 hr. And carrying out water quenching treatment after aging.
The mechanical properties of the high-strength wrought magnesium rare earth alloy prepared by the embodiment are as follows: room temperature: the yield strength is 307.4MPa, the tensile strength is 340.6MPa, and the elongation is 5.6%. High temperature 150 ℃ of: the yield strength is 252.4MPa, the tensile strength is 283.6MPa, and the elongation is 8.4%.
Example 2
The embodiment provides a high-strength Mg-Gd-Er-Y magnesium alloy which comprises the following components in percentage by mass: 10 wt.% Gd, 5 wt.% Er, 3 wt.% Y, 2 wt.% Ho, 0.5 wt.% Zr, the balance Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%.
1. Melting
At SF6And CO2The method is carried out under the protection of mixed gas, and comprises the following steps:
(1) drying materials: preheating pure magnesium, magnesium-gadolinium, magnesium-erbium, magnesium-yttrium, magnesium-holmium and magnesium-zirconium intermediate alloy for 4 hours at 200 ℃;
(2) melting magnesium: under the protective atmosphere, adopting a resistance furnace to melt the dried pure magnesium;
(3) adding Gd: under the protective atmosphere, after pure magnesium is completely melted, adding Mg-Gd intermediate alloy when the temperature of the melt is raised to 750 ℃, wherein the adding amount is determined according to the mass percentage of Gd in the Mg-Gd intermediate alloy and the smelting yield of Gd element;
(4) adding Er, Y and Ho: under the protective atmosphere, after Mg-Gd is melted, adding Mg-Er intermediate alloy when the temperature of the melt is raised to 750 ℃; in this way, Mg-Y, Mg-Ho was added;
(5) adding Zr: adding Mg-Zr intermediate alloy when the temperature of the melt reaches 780 ℃ in protective atmosphere;
(6) casting: and (3) stirring for 5 minutes when all the alloys are completely melted and the temperature of the melt rises to 750 ℃, then refining for 10 minutes without power off when the temperature of the melt rises to 750-760 ℃, heating to 780 ℃ after refining, standing for 30 minutes, skimming the surface scum and casting into alloy ingots after the melt is cooled to 720 ℃, and preheating to 200 ℃ by using a steel mould for casting.
2. Heat distortion treatment
(1) The alloy ingot obtained by smelting is subjected to solid solution for 8 hours at the temperature of 520 ℃ in advance, and is quenched by warm water at the temperature of 70 ℃.
(2) And carrying out hot extrusion on the cast ingot after the solution treatment, wherein the extrusion temperature is 200 ℃, and the extrusion ratio is 20: 1.
3. Aging treatment
Carrying out aging treatment on the alloy obtained after thermal deformation, wherein the aging process comprises the following steps: aging at 250 deg.C for 10 hr, and aging at 170 deg.C for 60 hr. And carrying out water quenching treatment after aging.
The mechanical properties of the high-strength wrought magnesium rare earth alloy prepared by the embodiment are as follows: room temperature: the yield strength was 480.6MPa, the tensile strength was 520.0MPa, and the elongation was 5.6%. High temperature 150 ℃ of: the yield strength is 504MPa, the tensile strength is 536.8MPa, and the elongation is 7.8%.
Example 3
The embodiment provides a high-strength Mg-Gd-Er-Y magnesium alloy which comprises the following components in percentage by mass: 4 wt.% Gd, 2 wt.% Er, 2 wt.% Y, 2 wt.% Ho, 0.5 wt.% Zr, the balance Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%.
1. Melting
At SF6And CO2The method is carried out under the protection of mixed gas, and comprises the following steps:
(1) drying materials: preheating pure magnesium, magnesium-gadolinium, magnesium-erbium, magnesium-yttrium, magnesium-holmium and magnesium-zirconium intermediate alloy for 4 hours at 200 ℃;
(2) melting magnesium: under the protective atmosphere, adopting a resistance furnace to melt the dried pure magnesium;
(3) adding Gd: under the protective atmosphere, after pure magnesium is completely melted, adding Mg-Gd intermediate alloy when the temperature of the melt is raised to 750 ℃, wherein the adding amount is determined according to the mass percentage of Gd in the Mg-Gd intermediate alloy and the smelting yield of Gd element;
(4) adding Er, Y and Ho: under the protective atmosphere, after Mg-Gd is melted, adding Mg-Er intermediate alloy when the temperature of the melt is raised to 750 ℃; in this manner, Mg-Y, Mg-Ho was added.
(5) Adding Zr: adding Mg-Zr intermediate alloy when the temperature of the melt reaches 780 ℃ in protective atmosphere
(6) Casting: stirring for 5 minutes when all alloys are completely melted and the temperature of the melt rises to 750 ℃, then continuously refining for 10 minutes when the temperature of the melt rises to 760 ℃, heating to 780 ℃ after refining, standing for 30 minutes, skimming surface scum and casting into alloy ingots after the melt is cooled to 720 ℃, and preheating a steel mould for casting to 200 ℃.
2. Heat distortion treatment
(1) The alloy ingot obtained by smelting is subjected to solid solution for 20 hours at 500 ℃ in advance, and is quenched by warm water at 70 ℃.
(2) Carrying out hot extrusion on the cast ingot subjected to the solution treatment, wherein the extrusion temperature is 200 ℃, and the extrusion ratio is 20: 1.
3. aging treatment
Carrying out aging treatment on the alloy obtained after thermal deformation, wherein the aging process comprises the following steps: aging at 200 deg.C for 8 hr, and aging at 150 deg.C for 20 hr. And carrying out water quenching treatment after aging.
The mechanical properties of the high-strength wrought magnesium rare earth alloy prepared by the embodiment are as follows: room temperature: the yield strength was 350.6MPa, the tensile strength was 390.6MPa, and the elongation was 12.6%. High temperature 150 ℃ of: the yield strength was 346.2MPa, the tensile strength was 356MPa, and the elongation was 15.3%.
Example 4
The embodiment provides a high-strength Mg-Gd-Er-Y magnesium alloy which comprises the following components in percentage by mass: 4 wt.% Gd, 2 wt.% Er, 0.2 wt.% Y, 4 wt.% Ho, 0.1 wt.% Zr, the balance Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%.
1. Melting
At SF6And CO2The method is carried out under the protection of mixed gas, and comprises the following steps:
(1) drying materials: preheating pure magnesium, magnesium-gadolinium, magnesium-erbium, magnesium-yttrium, magnesium-holmium and magnesium-zirconium intermediate alloy for 4 hours at 200 ℃;
(2) melting magnesium: under the protective atmosphere, adopting a resistance furnace to melt the dried pure magnesium;
(3) adding Gd: under the protective atmosphere, after pure magnesium is completely melted, adding Mg-Gd intermediate alloy when the temperature of the melt is raised back to 730 ℃, wherein the adding amount is determined according to the mass percentage of Gd in the Mg-Gd intermediate alloy and the smelting yield of Gd element;
(4) adding Er, Y and Ho: under the protective atmosphere, after Mg-Gd is melted, adding Mg-Er intermediate alloy when the temperature of the melt is raised back to 730 ℃; in this manner, Mg-Y, Mg-Ho was added.
(5) Adding Zr: adding Mg-Zr intermediate alloy when the temperature of the melt reaches 760 ℃ in the protective atmosphere
(6) Casting: and (3) stirring for 5 minutes when all the alloys are completely melted and the temperature of the melt rises to 750 ℃, then refining for 8 minutes without power off when the temperature of the melt rises to 750-760 ℃, heating to 780 ℃ after refining, standing for 25 minutes, skimming the surface scum and casting into alloy ingots after the melt is cooled to 710 ℃, and preheating to 240 ℃ by using a steel mould for casting.
2. Heat distortion treatment
(1) The alloy ingot obtained by smelting is subjected to solid solution for 2 hours at 500 ℃ in advance, and is quenched by warm water at 70 ℃.
(2) Carrying out hot extrusion on the cast ingot subjected to the solution treatment, wherein the extrusion temperature is 200 ℃, and the extrusion ratio is 20: 1.
3. aging treatment
Carrying out aging treatment on the alloy obtained after thermal deformation, wherein the aging process comprises the following steps: aging at 200 deg.C for 2h, and aging at 150 deg.C for 20 h. And carrying out water quenching treatment after aging.
The mechanical properties of the high-strength wrought magnesium rare earth alloy prepared by the embodiment are as follows: room temperature: the yield strength is 319.4MPa, the tensile strength is 360.9MPa, and the elongation is 8.6%. High temperature 150 ℃ of: the yield strength is 262.9MPa, the tensile strength is 293.4MPa, and the elongation is 10.4%.
Example 5
The embodiment provides a high-strength Mg-Gd-Er-Y magnesium alloy which comprises the following components in percentage by mass: 4 wt.% Gd, 6 wt.% Er, 6 wt.% Y, 0.5 wt.% Ho, 0.1 wt.% Zr, the balance Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%.
1. Melting
At SF6And CO2The method is carried out under the protection of mixed gas, and comprises the following steps:
(1) drying materials: preheating pure magnesium, magnesium-gadolinium, magnesium-erbium, magnesium-yttrium, magnesium-holmium and magnesium-zirconium intermediate alloy for 4 hours at 200 ℃;
(2) melting magnesium: under the protective atmosphere, adopting a resistance furnace to melt the dried pure magnesium;
(3) adding Gd: under the protective atmosphere, after pure magnesium is completely melted, adding Mg-Gd intermediate alloy when the temperature of the melt is raised to 740 ℃, wherein the adding amount is determined according to the mass percentage of Gd in the Mg-Gd intermediate alloy and the smelting yield of Gd element;
(4) adding Er, Y and Ho: under the protective atmosphere, after Mg-Gd is melted, adding Mg-Er intermediate alloy when the temperature of the melt is raised to 740 ℃; in this manner, Mg-Y, Mg-Ho was added.
(5) Adding Zr: under the protective atmosphere, adding Mg-Zr intermediate alloy when the temperature of the melt reaches 750 DEG C
(6) Casting: and (3) stirring for 5 minutes when all the alloys are completely melted and the temperature of the melt rises to 740 ℃, then continuously refining for 5 minutes when the temperature of the melt rises to 750-760 ℃, heating to 780 ℃ after refining, standing for 40 minutes, skimming the surface scum and casting into alloy ingots after the melt is cooled to 740 ℃ after standing, and preheating to 220 ℃ by using a steel mould for casting.
2. Heat distortion treatment
(1) The alloy ingot obtained by smelting is subjected to solid solution for 2 hours at 500 ℃ in advance, and is quenched by warm water at 70 ℃.
(2) Carrying out hot extrusion on the cast ingot subjected to the solution treatment, wherein the extrusion temperature is 200 ℃, and the extrusion ratio is 20: 1.
3. aging treatment
Carrying out aging treatment on the alloy obtained after thermal deformation, wherein the aging process comprises the following steps: aging at 200 deg.C for 2h, and aging at 150 deg.C for 20 h. And carrying out water quenching treatment after aging.
The mechanical properties of the high-strength wrought magnesium rare earth alloy prepared by the embodiment are as follows: room temperature: the yield strength is 320.4MPa, the tensile strength is 380.4MPa, and the elongation is 7.6%. High temperature 150 ℃ of: the yield strength is 300.5MPa, the tensile strength is 340.6MPa, and the elongation is 12.6%.
Example 6
The embodiment provides a high-strength Mg-Gd-Er-Y magnesium alloy, which is basically consistent with the embodiment 5 in percentage by mass, and is different from the embodiment only in that: in this example, Zr is 1 wt.%, that is, the mass percentages of the components are: 4 wt.% Gd, 6 wt.% Er, 6 wt.% Y, 0.5 wt.% Ho, 1 wt.% Zr, the balance Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%. The preparation method of the magnesium rare earth alloy in the embodiment is the same as that of the embodiment 5.
The mechanical properties of the magnesium rare earth alloy prepared by the embodiment are as follows: room temperature: the yield strength was 356.7MPa, the tensile strength was 371.2MPa, and the elongation was 10.6%. High temperature 150 ℃ of: the yield strength is 294.7MPa, the tensile strength is 330.6MPa, and the elongation is 15.4%.
Comparative example 1
The comparative example provides a magnesium rare earth alloy, which is basically consistent with example 4 in all the components in percentage by mass, and is different only in that: in the comparative example, no Er element is added, and the mass percent of each component is as follows: 4 wt.% Gd, 0.2 wt.% Y, 4 wt.% Ho, 0.1 wt.% Zr, the balance Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%. The preparation method of the magnesium rare earth alloy in the comparative example is consistent with that of example 4.
The mechanical properties of the magnesium rare earth alloy prepared by the comparative example are as follows: room temperature: the yield strength is 223.5MPa, the tensile strength is 260.5MPa, and the elongation is 8.6%. High temperature 150 ℃ of: the yield strength is 209.5MPa, the tensile strength is 235.9MPa, and the elongation is 10.8%.
Comparative example 2
The comparative example provides a magnesium rare earth alloy, which is basically consistent with example 4 in all the components in percentage by mass, and is different only in that: the Y element is not added in the comparative example, and the mass percentages of the components are as follows: 4 wt.% Gd, 2 wt.% Er, 4 wt.% Ho, 0.1 wt.% Zr, the balance being Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%. The preparation method of the magnesium rare earth alloy in the comparative example is consistent with that of example 4.
The mechanical properties of the magnesium rare earth alloy prepared by the comparative example are as follows: room temperature: the yield strength was 230.2MPa, the tensile strength was 275.4MPa, and the elongation was 8.7%. High temperature 150 ℃ of: the yield strength was 206.4MPa, the tensile strength was 259.4MPa, and the elongation was 11.8%.
Comparative example 3
The present comparative example provides a magnesium rare earth alloy having the components in the mass percentages consistent with example 4, with specific alloy compositions of 4 wt.% Gd, 2 wt.% Er, 0.2 wt.% Y, 4 wt.% Ho, 0.1 wt.% Zr, the balance Mg and unavoidable impurities, and the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%.
The preparation method of the magnesium rare earth alloy in the comparative example is basically the same as that of the example 4, and the difference is only that: in the comparative example, the alloy is not subjected to thermal deformation treatment after smelting, and is directly subjected to aging treatment.
The mechanical properties of the magnesium rare earth alloy prepared by the comparative example are as follows: room temperature: the yield strength is 280.6MPa, the tensile strength is 300.9MPa, and the elongation is 2.3%. High temperature 150 ℃ of: the yield strength is 260.4MPa, the tensile strength is 290.8MPa, and the elongation is 5.8%.
Comparative example 4
The comparative example provides a magnesium rare earth alloy, which is basically consistent with example 4 in all the components in percentage by mass, and is different only in that: in the comparative example, the Ag element is adopted to replace Ho, and the Ag element comprises the following components in percentage by mass: 4 wt.% Gd, 2 wt.% Er, 0.2 wt.% Y, 4 wt.% Ag, 0.1 wt.% Zr, the balance Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%. The preparation method of the magnesium rare earth alloy in the comparative example is consistent with that of example 4.
The mechanical properties of the magnesium rare earth alloy prepared by the comparative example are as follows: room temperature: the yield strength was 300.9MPa, the tensile strength was 310.4MPa, and the elongation was 2.1%. High temperature 150 ℃ of: the yield strength was 287.6MPa, the tensile strength was 296.4MPa, and the elongation was 3.3%.
Comparative example 5
The comparative example provides a magnesium rare earth alloy, which is basically consistent with example 4 in all the components in percentage by mass, and is different only in that: in the comparative example, the mass percent of Er is 1 wt.%, namely, the mass percent of each component is as follows: 4 wt.% Gd, 1 wt.% Er, 0.2 wt.% Y, 4 wt.% Ho, 0.1 wt.% Zr, the balance Mg and unavoidable impurities, the total amount of impurity elements Si, Fe, Cu and Ni being less than 0.02 wt.%. The preparation method of the magnesium rare earth alloy in the comparative example is consistent with that of example 4.
The mechanical properties of the magnesium rare earth alloy prepared by the comparative example are as follows: room temperature: the yield strength is 274.9MPa, the tensile strength is 306.5MPa, and the elongation is 6.4%. High temperature 150 ℃ of: the yield strength is 247.8MPa, the tensile strength is 260.1MPa, and the elongation is 8.9%.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (6)
1. The high-strength Mg-Gd-Er-Y magnesium alloy is characterized by comprising the following elements in percentage by weight: gd is 4-15 wt.%, Er is 2-6 wt.%, Y is 0.2-6 wt.%, Ho is 0-4 wt.%, Zr is 0-1 wt.%, and the total amount of Gd, Er, Y and Ho is: 6.2-20 wt.%, the balance being Mg and unavoidable impurities;
the preparation method of the high-strength Mg-Gd-Er-Y magnesium alloy comprises the steps of smelting, thermal deformation treatment and aging treatment in sequence;
the thermal deformation treatment comprises the following specific steps:
a1, carrying out solid solution on the alloy ingot obtained by smelting at 480-540 ℃ for 2-10 hours in advance, and quenching with warm water at 70 ℃;
a2, carrying out hot extrusion on the cast ingot subjected to the solution treatment in the step A1, wherein the extrusion temperature is 200 ℃, and the extrusion ratio is 20: 1;
the aging treatment comprises the following specific steps: aging for 2-10 h at 170-250 ℃, and then aging for 10-60 h at 100-170 ℃.
2. The high strength Mg-Gd-Er-Y magnesium alloy according to claim 1, wherein Ho in the magnesium alloy is 0.5-2 wt.%.
3. The high strength Mg-Gd-Er-Y magnesium alloy according to claim 1, wherein Zr in the magnesium alloy is 0.5-1 wt.%.
4. The preparation method of the high-strength Mg-Gd-Er-Y magnesium alloy according to the claim 1, which is characterized by comprising three processes of smelting, thermal deformation treatment and aging treatment in sequence.
5. The preparation method of the high-strength Mg-Gd-Er-Y magnesium alloy according to claim 4, characterized in that the smelting comprises the following specific steps:
s1, baking materials: preheating pure magnesium and intermediate alloys of magnesium-gadolinium, magnesium-erbium, magnesium-yttrium, magnesium-holmium and magnesium-zirconium at the temperature of 200-240 ℃;
s2, melting magnesium, adding Gd, Er, Y and Ho: melting the dried pure magnesium in a protective atmosphere; after pure magnesium is completely melted, adding Mg-Gd intermediate alloy, Mg-Er intermediate alloy, Mg-Y intermediate alloy and Mg-Ho intermediate alloy when the temperature of the melt is raised to 730-750 ℃;
s3, adding Zr: adding Mg-Zr intermediate alloy when the temperature of the melt obtained in the step S2 reaches 750-780 ℃ in a protective atmosphere;
s4, casting: and under a protective atmosphere, stirring when all alloys are completely melted and the temperature of the melt rises to 730-750 ℃, then refining without power failure for 5-10 minutes when the temperature of the melt rises to 750-760 ℃, heating to 780 ℃ after refining, standing for 25-40 minutes, skimming the surface scum after the melt is cooled to 710-740 ℃ after standing, and casting to obtain the alloy ingot.
6. The preparation method of the high-strength Mg-Gd-Er-Y magnesium alloy according to the claim 5, characterized in that in the step S2, after the pure magnesium is completely melted, the Mg-Gd intermediate alloy, the Mg-Er intermediate alloy, the Mg-Y intermediate alloy and the Mg-Ho intermediate alloy are added in sequence when the melt temperature is raised to 730-750 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910538114.4A CN110229984B (en) | 2019-06-20 | 2019-06-20 | High-strength Mg-Gd-Er-Y magnesium alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910538114.4A CN110229984B (en) | 2019-06-20 | 2019-06-20 | High-strength Mg-Gd-Er-Y magnesium alloy and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110229984A CN110229984A (en) | 2019-09-13 |
| CN110229984B true CN110229984B (en) | 2020-08-04 |
Family
ID=67857208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910538114.4A Active CN110229984B (en) | 2019-06-20 | 2019-06-20 | High-strength Mg-Gd-Er-Y magnesium alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110229984B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041311A (en) * | 2019-12-31 | 2020-04-21 | 北京工业大学 | Rare earth magnesium alloy with low cost and high performance and preparation technology thereof |
| CN111155014B (en) * | 2020-02-08 | 2021-09-07 | 苏州轻金三维科技有限公司 | High-strength alloy for three-dimensional printing and preparation method thereof |
| CN111270118A (en) * | 2020-03-19 | 2020-06-12 | 上海交通大学 | Corrosion-resistant ternary magnesium alloy and preparation method thereof |
| CN113755734B (en) * | 2021-08-30 | 2022-10-25 | 西安交通大学 | High-strength high-plasticity heat-resistant magnesium alloy with LPSO phase and SFs structure and preparation method thereof |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676646A (en) * | 2005-04-21 | 2005-10-05 | 上海交通大学 | High-strength heat-resisting magnesium alloy and its preparing method |
| CN1752251A (en) * | 2005-10-13 | 2006-03-29 | 上海交通大学 | High-strength cast Mg alloy containing rare-earth and preparing process thereof |
| CN101130842A (en) * | 2006-08-25 | 2008-02-27 | 北京有色金属研究总院 | High-strength heat-resistant magnesium alloy and smelting method thereof |
| CN101512029A (en) * | 2006-09-13 | 2009-08-19 | 镁电子有限公司 | Magnesium gadolinium alloys |
| CN101857936A (en) * | 2010-07-05 | 2010-10-13 | 重庆大学 | Method for preparing magnesium alloy |
| WO2011117630A1 (en) * | 2010-03-25 | 2011-09-29 | Magnesium Elektron Limited | Magnesium alloy containing heavy rare earths |
| CN102534330A (en) * | 2012-02-22 | 2012-07-04 | 上海交通大学 | High-strength cast magnesium alloy and preparation method thereof |
| CN103820689A (en) * | 2012-11-19 | 2014-05-28 | 北京有色金属研究总院 | High-strength and heat-resistant magnesium alloy containing two rare earths and preparation method thereof |
| CN107119245A (en) * | 2017-03-23 | 2017-09-01 | 中南大学 | A kind of multistage annealing process of the strong big ingot blank of high temperature resistant magnesium alloy of superelevation |
| WO2018154124A1 (en) * | 2017-02-24 | 2018-08-30 | Innomaq 21, S.L. | Method for the economic manufacture of light components |
| CN108796328A (en) * | 2018-07-03 | 2018-11-13 | 中国科学院长春应用化学研究所 | A kind of high-strength heat-resistant rare earth magnesium alloy and preparation method thereof |
| CN108950331A (en) * | 2018-07-19 | 2018-12-07 | 上海交通大学 | Discharge plasma sintering regulates and controls the magnesium alloy with high strength and ductility preparation method containing tiny LPSO structure |
| CN108977711A (en) * | 2018-07-23 | 2018-12-11 | 上海交通大学 | A kind of diecast magnesium alloy material and preparation method thereof |
| CN108977710A (en) * | 2018-07-23 | 2018-12-11 | 上海交通大学 | A kind of extrusion casint magnesium alloy materials and preparation method thereof |
| CN109536803A (en) * | 2019-01-16 | 2019-03-29 | 北京工业大学 | Low rare earth-magnesium alloy board of a kind of high ductibility and preparation method thereof |
| CN109609825A (en) * | 2018-12-28 | 2019-04-12 | 北京工业大学 | A method of super high-strength magnesium alloy is prepared using pre-stretching composite double-stage aging technique |
| CN109881065A (en) * | 2019-03-29 | 2019-06-14 | 凤阳爱尔思轻合金精密成型有限公司 | High-toughness heat-resistant Mg-Gd-Er alloy and preparation method thereof suitable for low pressure casting |
| CN109913724A (en) * | 2019-03-18 | 2019-06-21 | 上海交通大学 | Containing anti-corrosion Mg-Gd-Y system alloy of As and preparation method thereof |
-
2019
- 2019-06-20 CN CN201910538114.4A patent/CN110229984B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676646A (en) * | 2005-04-21 | 2005-10-05 | 上海交通大学 | High-strength heat-resisting magnesium alloy and its preparing method |
| CN1752251A (en) * | 2005-10-13 | 2006-03-29 | 上海交通大学 | High-strength cast Mg alloy containing rare-earth and preparing process thereof |
| CN101130842A (en) * | 2006-08-25 | 2008-02-27 | 北京有色金属研究总院 | High-strength heat-resistant magnesium alloy and smelting method thereof |
| CN101512029A (en) * | 2006-09-13 | 2009-08-19 | 镁电子有限公司 | Magnesium gadolinium alloys |
| WO2011117630A1 (en) * | 2010-03-25 | 2011-09-29 | Magnesium Elektron Limited | Magnesium alloy containing heavy rare earths |
| CN101857936A (en) * | 2010-07-05 | 2010-10-13 | 重庆大学 | Method for preparing magnesium alloy |
| CN102534330A (en) * | 2012-02-22 | 2012-07-04 | 上海交通大学 | High-strength cast magnesium alloy and preparation method thereof |
| CN103820689A (en) * | 2012-11-19 | 2014-05-28 | 北京有色金属研究总院 | High-strength and heat-resistant magnesium alloy containing two rare earths and preparation method thereof |
| WO2018154124A1 (en) * | 2017-02-24 | 2018-08-30 | Innomaq 21, S.L. | Method for the economic manufacture of light components |
| CN107119245A (en) * | 2017-03-23 | 2017-09-01 | 中南大学 | A kind of multistage annealing process of the strong big ingot blank of high temperature resistant magnesium alloy of superelevation |
| CN108796328A (en) * | 2018-07-03 | 2018-11-13 | 中国科学院长春应用化学研究所 | A kind of high-strength heat-resistant rare earth magnesium alloy and preparation method thereof |
| CN108950331A (en) * | 2018-07-19 | 2018-12-07 | 上海交通大学 | Discharge plasma sintering regulates and controls the magnesium alloy with high strength and ductility preparation method containing tiny LPSO structure |
| CN108977711A (en) * | 2018-07-23 | 2018-12-11 | 上海交通大学 | A kind of diecast magnesium alloy material and preparation method thereof |
| CN108977710A (en) * | 2018-07-23 | 2018-12-11 | 上海交通大学 | A kind of extrusion casint magnesium alloy materials and preparation method thereof |
| CN109609825A (en) * | 2018-12-28 | 2019-04-12 | 北京工业大学 | A method of super high-strength magnesium alloy is prepared using pre-stretching composite double-stage aging technique |
| CN109536803A (en) * | 2019-01-16 | 2019-03-29 | 北京工业大学 | Low rare earth-magnesium alloy board of a kind of high ductibility and preparation method thereof |
| CN109913724A (en) * | 2019-03-18 | 2019-06-21 | 上海交通大学 | Containing anti-corrosion Mg-Gd-Y system alloy of As and preparation method thereof |
| CN109881065A (en) * | 2019-03-29 | 2019-06-14 | 凤阳爱尔思轻合金精密成型有限公司 | High-toughness heat-resistant Mg-Gd-Er alloy and preparation method thereof suitable for low pressure casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110229984A (en) | 2019-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110229984B (en) | High-strength Mg-Gd-Er-Y magnesium alloy and preparation method thereof | |
| CN110004341B (en) | High-strength magnesium alloy containing rare earth and preparation method thereof | |
| CN109837438B (en) | Low-cost high-strength wrought magnesium alloy and preparation method thereof | |
| CN110885940B (en) | Rare earth aluminum alloy material and preparation method thereof | |
| CN110938765B (en) | Manufacturing method of high-strength Al-Mg-Si aluminum alloy bar for automobile chassis | |
| CN111118418B (en) | Aging treatment method for improving toughness of Al-Zn-Mg-Cu aluminum alloy, high-toughness aluminum alloy and preparation method thereof | |
| CN108330360B (en) | high-Zn-content high-strength-toughness extrusion deformation aluminum-lithium alloy and preparation method thereof | |
| CN101871066A (en) | High-obdurability magnesium alloy comprising tin and zinc and preparation method thereof | |
| CN109930045B (en) | High-strength-toughness heat-resistant Mg-Gd alloy suitable for gravity casting and preparation method thereof | |
| CN114107849A (en) | Preparation method of high-strength and high-toughness Mg-Gd-Y-Zn-Zr wrought magnesium alloy | |
| CN113106310A (en) | High-strength heat-resistant Al-Cu-Sc wrought aluminum alloy and preparation method thereof | |
| CN105568105A (en) | High-strength high-plasticity Mg-Gd-Y-Ni-Mn alloy and preparing method thereof | |
| CN108998711B (en) | High-strength-toughness deformed magnesium-lithium alloy and preparation method thereof | |
| CN113564435A (en) | High-strength cast aluminum alloy and preparation method thereof | |
| CN107201472B (en) | Sand casting rare earth magnesium alloy and preparation method thereof | |
| CN110331319B (en) | High-strength and high-plasticity corrosion-resistant aluminum alloy containing scandium and erbium and preparation method thereof | |
| CN109943760B (en) | High-strength high-plasticity rare earth magnesium alloy and preparation method thereof | |
| CN112831708A (en) | Titanium-aluminum-based polycrystalline heat-resistant titanium alloy and preparation method thereof | |
| CN111020321B (en) | Al-Cu series casting alloy suitable for forging processing and preparation method thereof | |
| CN110791688B (en) | High-strength high-fracture-toughness aluminum alloy bar and preparation method thereof | |
| CN112646997B (en) | Scandium-containing ultrahigh-strength aluminum alloy for aerospace and manufacturing method thereof | |
| CN110760728B (en) | Long-period structure reinforced high-strength heat-resistant magnesium alloy and preparation method thereof | |
| CN110983130A (en) | Er-containing high-strength corrosion-resistant Al-Zn-Mg aluminum alloy and preparation method thereof | |
| CN108048704B (en) | Preparation method of lanthanum and ytterbium-containing corrosion-resistant aluminum alloy material | |
| WO2020052129A1 (en) | Rare-earth aluminum alloy material having high ductility and high strength and preparation method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20190913 Assignee: YANGZHOU FENGMING PHOTOELECTRIC NEW MATERIAL Co.,Ltd. Assignor: SHANGHAI JIAO TONG University Contract record no.: X2022310000016 Denomination of invention: High strength mg-gd-er-y magnesium alloy and preparation method thereof Granted publication date: 20200804 License type: Exclusive License Record date: 20220311 |